Samuel b



`(No Model.) A

S. B. I-I. VANCE.

COMBINED GAS AND ELECTRIC LICHT FIXTURE.

Patented Jan. I7, 1 888.

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UNITED STATES PATENT OEEICE.

SAMUEL B. H. VANOE, OF NEV YORK, N. Y.

COMBINED GAS AND ELECTRIC-LIGHT FIXTURE.

A EPECIFICATIONoi-ming part of Letters atent No. 376,617, dated January 17, 1888.

Application filed January 3l, 1887. Serial No. 225,974. (No model.)

To all whom it may concern:

Be itknown that I, SAMUEL B. IIVANOE, of

the city, county/,and State of New York, have invented certain new and useful Improvements in Combined Gas and Electric-Light Fixtures, of which the following is a specification. My presentinvention applies more especially to swing -joint brackets-that is, brackets formed of two or more sections jointed to each other by the usual swing-joint, consisting of a ground conical plug turning in a ground conical socket; and my invention aims to provide an efficient and simple plan for conducting the wire and gas through independent passages in theY swing-joints, and yet allow perfect freedom of motion to thejoint, prevent injury to the wire, and yet keep the wire and gas-passagesdistinct` To these ends I makethe plug of the swing-joint with a hollow or tubular center, up through which the wires are passed in aloop from the lower end of the socket, While the gas-passage is formed on the interior of the plug between the same and the socket. The tubes ofthe bracket have distinct passages for gas and wires, and connect to these plugs in such a way that their respective passages match with the corresponding passages in the plugs.

My invention, therefore, consists partly in the features above outlined, and also in the details of the swing-joints consisting in hollow screws and washers which retain the hollow plugs in the sockets at the open end where the wires areinserted; also, in removable caps, one of which covers the lower opening of the Socket through which the wires are looped into the plug, and the other of which covers the top of the plug where the gas-passage is continued into the tubes of the bracket. I prefer to make the tubes or sections of the bracket on the principle shown in my former pat-ent, No. 306,558-that is, with two semi-cylindrical tubes placed with their flat or diametrical sides in contact-thus forming two distinct parallel ducts for gas and wires within the space and form of one round tube; but in my present xture I solder these half-tubes into a complete outer tube, which is screwed and soldered at the ends into the swing-joints. My invention, therefore, consists, mainly, in the several featnresabove ontlined,andin some minor details, as hereinafter fully set forth.

In the drawings annexed, Figure l pre sents a longitudinal section of mylimproved combined fixture, and Fig. 2 gives a crossseetion of one of the tubular sections of the bracket on the line fr x. Fig. 3 is a modifica.- tion.

Referring to Fig. l, a indicates the wall, and b the gas-nipple protruding therefrom to connect with the fixture, which has the usual threaded neck or nipple, g, on its root end, which is coupled with the gas-nipple b by the usual insulatiiig-coupling, c. The swing-j oints of the fixture are indicated by A A B B', A A representing the sockets, and B B the plugs of the said joints, while the arms or tubes of the bracket are indicated by C O, which extend from joint to joint, as usual. The socket A at the root end ofthe fixture has an enlarged cylindrical neck or rim, d, between the screwneck g and the socket A, all said parts A d g being formed in one integral casting, as shown in the drawings, and upon this neck is fitted a sliding or adjustable ring or collar, D, having a projecting bead, c, and a set-screw, f, by which latter it may be clamped at the desired position on the neck d.

h indicates a dome-shaped wall-plate7 or canopy, made in bisected sections, the base of which fits against the wall, while the apex encircles the collar D, abutting against the bead c. This canopy thus conceals, as usual, the wire and gas-connections between the wall and the iixture, and secures a sightly nish at the root of the fixture, and it will be noted that while the projection of the fixture from the wall may vary somewhat in lengtl1,by reason of t-he screwconnection at the parts b o g, yet as the collar D has a fair range of adjustment on the neck d it may thus be always set up against the apex of the canopy It, so as to hold the same in firm position and prevent looseness of the parts or gaping openings, and thereby secures a perfect iinish, the said adjustable collar D beingpthus a minor feature of my invention.

New, referring to thc sockets A A, it will be noted that they are formed, as usual, with tapering or conical bores, to receive the tapering or conical spindles of the plugs B B;

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but this conical bore of the socket does not extend clear through, as usual, but terminates at or near the middle of the socket, and opens into an enlarged recess or chamber, k, in the bottom of the socket, with a seating-shoulder, m, between the conical bore and the recess k, as well shown in Fig. 1. Now, the conical plugs B B', instead of being solid and protruding from the end of the socket, as usual, are tubular or have a central bore, t', and the plugs terminate within the sockets in the top of the recess k, and each plug basa hollow screw, j, which screws into the center of the plug and bears on a washer, k2, which seats on the shoulder m,thus retaining the plugin proper position in the socket and permitting it to turn freely therein. Now, the tubes C C of the fixture contain distinct parallel ducts n 0 for gas and wires, said ducts being formed by semi-cylindrical or half tubes n o,titting snugly within the outer tubes, C, as shown in Figs. 1 and 2. This compound tube C a o screws at one end into a screw-socket, p, in the head of the plug B or B', as shown, the opposite end of the tube being screwed into the neck r of the socket A', while the terminal end of the last tube screws into a fitting, F, on the top of which is fitted the gas-cock and burner s, while to the bottom is attached the electric lamp t. New the root end of the fixture-that is the casting g l A-has an internal gas-passage, u, extending slightly diagonally upward and opening at about the middle of the socket A, coincident with an annulargroove or gas-passage, v, around the plug, from which groove a continuing gasduct, 3, rises through the plug and opens into a recess, 7c', in the head of the plug, into which recess the screw-neck p also opens. Now one end of the compound tube C is screwed into the neck p, so that the central wireway, z', of the plug, which is turned laterally at the top, matches with the wireway o in the lower half of the compound tube C, while the gasway 'n in the upper half of the tube connects with the recess k', and thus forms a continuation of the gas-passage from the nipples b u. The other end of the tube C screws into the neck r of the socket A', where the gas-duct n matches with an upward pas sage, u', which connects, to the groove v and passage 3 of the plug B', while the wire-duct 0 matches with a downward passage which opens into the lower recess of the socket A'. The front end of the terminal tube C screws into the neck of the fitting F, which has an upwardly-curved passage, 6, extending to the gas-cock and burner, which coincides with the gas-duct n, while a downwardly-curved passage, 8, extending to the electric lamp e'oin cides with 'the wire-duct o. Now the compound tubes C are both screwed and soldered into their sockets in the plugs BB,and fitting F being soldered gas-tightat the points or partitions w between the wire and gas ways,this soldering being easily done by blow pipe and wire-solder inserted through the top of the recesses k', thus rendering the gas and wire ways perfectly distiuct'and keeping one gas-tight from the other, so that no gas can come in contact with the wires. After thus soldering the tubes in place the recesses kare covered by screw-caps w, screwed onto the top of the plugs with white lead to prevent escape of gas at said parts. rlhe gaspassage is thus continuous from end to end of the fixture, as follows: Flowing from the nipple b, the gas enters the passage u and thence flows by the groove c, bore 3, and recess la' to the half-tube a, thence by passage u', groove c, and bore 3 to second recess k' into second half-tube n, and thence by curved passage 6 to the cock and burner.

The course of the electric wires is as follows: Being rst coupled with the wires extending from the wall within the canopy h,the fine iiexible wires q of the fixture extend through abore, y, in the outer part of theneck d into the bottom recess,k,of the socket A, and being bent upwardly in a loop therein pass centrally up through the bore "i of the plug and turning laterally at the top thereof enter the lower half-tube, o.` 'Ihe wires thence pass down through the passage y into the recess 7c of the socket A', and being similarly looped therein pass up through the bore of the plug B and thence into the second half-tube o, and tnally down the passage 8 in the fitting F to the electric lamp t. ,The bottom recesses, k, in the sockets A A' are closed by deep-curved screwcaps w', which cover the hollow end of the plugs and permit the looping of the wires therein and at the same time conceal the wires and thus impart a neat finish to the sockets. It may now be seen that this construction is not only very substantial and insures independence of the wire and gas ways, butit admits ofthe wires being easily threaded through the fixture when the caps lw' are taken ofi' and the plugs removed from the sockets. Furthermore, the wires pass through the swing-joints at the very center or axis ottheplugs and are curved in a free easy loop at the base of the plugs, so that consequently perfect freedom of motion of the swing -joint is allowed and the wires are subjected to the least possible twist or strain in the movement of the joints. l prefer to cover the looped part of the wires in the base of the sockets with a piece of rubber tubing, e', to better protect the same from the possibility of any` abrasion and to better sustain the wires, as will be readily appreciated.

I do not, of course, limit myself to the two half tubes n o in the tubes C of the bracket in connection with swing-joints having the novel construction shown, as any other suitable arrangement of gas and wire ducts in the tubes or arms of the xturc may be used with the novel swing-joints described. It will be noted, however, that the described construction of the tubular arms is very much to be preferred, as it not only provides perfectly distinct ducts for gas and wires, but it forms arms which possess unusual strength and rigidity, which is very desirable, 'particularly in combined xtures. I prefer to make the tubes of round or circular section; but of course they may be of angular or other forms, if preferred.

In some cases a separate tube may be used for positive and negative wires, thus making three segmental tubes for gas and wires col-y lectively, all of which may abut snugly within the outer main tube, as shown in Fig. 3.

Vhat I claim is l l. In a combined electric and gas tixture, swing-joints having a tubular plug held within the sockets and adapted to receive the wires through the center thereof, with an external gasgroove on said plug and a lateral duct in I substantiallyas shownand described.

op The combination, with the socket A or A', having a lateral gas-passage, of the plugs B or B', having gas-passage on its ground or seating face continued to the head of the plug, and a central wirepassage, i', with two distinct tubes or ducts connected to the top of said plug coincident with the respective gas and wire passages, substantially as shown and described.

4. In aswing-joint for combined fixtures, the combination, with socket A or A', of the tubular plugs B or B', having a central bore, i, turned laterally in the head of the plug, with a circumferential gas groove, o, vertical gas-passage 3, recess k', removable cap w, and socket p, into which said gas and wire passages open independently, substantially as shown and described.

5. In a swing-joint for combined fixtures, a socket having a wireway extending laterally into the open base thereof, and a gasway opening laterally into the ground seat thereof, with a tubular plug having a gas-passage on its ground exterior extended vertically through the body of the plug to the head thereof, and a central wire-passage opening from the base of the plug extending into the head thereof, from which head both gas and wire passages issue independently, substantially as set forth.

6. In aswing-jointfor combined fixtures, the sockets A A', having lateral gas and wire pas sages a y and recesses k', and caps w over said recesses, in combination with the tubular plugs B B, washers k2, and hollow screws j j,

holding said plugs in said shouldered recesses, substantially as shown and described.

7. In a combined xture, swingjoints having plugs with a recessed head, removable caps w on said recessed head, a gas-passage leading from said recess through the plug fui@ the ground seat of plug and socket, a wireway extending up through the center of the plug, a neck or socket, p, on the head of said plug, into which both wire and gas ways open sep- 7o arately, and a doublelducted tube connected to said neck and soldered or sealed gas-tight therein atthe septum between said wire and gas ways, substantially as shown and described.

8. In a combined swing-joint fixture, sockets having a lateral gasway aia the ground seat and a lateral wireway into the open base of the socket, with a plug having an internal gaspassage 'via the ground-seat, and a central wireway with wires passed in a U-loop from the lateral passage of the socket up into the bore of the plug, with both gas and wire ways continued laterally from head of plug,and gas and wire ducts extending parallel in arms of S5 fixture from said head.

9. In combination with the sockets A A and plugs B B, having internal gas-passages oa the ground seat, and a central passage for the wires, the compound tube extending from the head of said plugs and consisting of the outer tube, C, with two internal half-tubes, a 0, connecting independently to the gas and wire ways in the said head, substantially as shown and described.

10. In a combined gas and electric fixture, a compound conducting and sustaining tube for gas and wires, consisting ofan outer inclosingtube with two or more distinct half or segmental tubes iitted snugly within the same, Ico abutting together and forming independent duets for gas and wires.

1l. In a combined gas and electric lixture, a compound conducting and supporting tube consisting of an outer round or cylindrical x05 tube, C, in combination with two half-round or semi-cylindrical tubes, a o, abutting diainetrically together within said outer tube and forming distinct ducts for gas and wires, substantially as shown and described.

l2. In a lighting fixture, the combination, with a neck, d, on the root end of the fixture and a wall plate or canopy, of an adjustable ring or collar :mounted on said neck and abutting against said canopy, substantially as and 115 for the purpose set forth.

SAMUEL B. II. VANGE.

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Vi tnesses:

J. T. DnNNIs, .Linus WYTT, Jr. 

